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O: Fachverband Oberflächenphysik

O 58: Metal Substrates: Adsorption IV

O 58.7: Vortrag

Donnerstag, 29. März 2007, 17:15–17:30, H39

Self-organization of cobalt-phthalocyanine on a vicinal gold surface revealed by scanning tunnelling microscopy — •J. Kröger, H. Jensen, N. Néel, and R. Berndt — Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany

Adsorption of cobalt-phthalocyanine on Au(788) in the sub-monolayer coverage regime leads to a preferential occupation of step edges with the molecule plane tilted such as to bridge adjacent terraces. Molecules which adsorb on terraces leave the surface reconstruction of Au(788) unchanged and exhibit the propensity to occupy face-centered cubic stacking domains. Tunnelling spectroscopy in the centre of the molecule reveals cobalt d-orbital related features, while spectroscopy on the benzene rings shows the lowest unoccupied molecular orbital.